TPS7A19 40-V 450-mA low-IQ low-dropout (LDO) linear regulator with power good | TI.com

TPS7A19 (ACTIVE) 40-V 450-mA low-IQ low-dropout (LDO) linear regulator with power good

 

Recommended alternative parts

  • TPS7A90  -  TPS7A90 is 500mA, low noise (4.7uVrms) LDO in a small package (2.5 mm x 2.5mm)

Description

The TPS7A19 is a low-dropout linear regulator (LDO) with a wide input voltage (VIN) range up to 40 V, capable of sourcing high output current (IOUT) up to 450 mA. This voltage regulator is ideal for generating a low-voltage supply from wide input-voltage rails. Not only does the TPS7A19 supply a well-regulated voltage rail, but the device also withstands and maintains regulation during voltage transients by acting as a simple surge protection circuit.

The TPS7A19 consumes only 15 µA of quiescent current (IQ) at light loads, thereby lowering the power consumption for always-on or battery-powered applications.

The TPS7A19 features integrated thermal shutdown and overcurrent protection. The TPS7A19 also offers a power good output (PG) with a programmable delay that indicates when the output voltage is in regulation. This feature is useful for power-rail sequencing functions.

This LDO is available in a small, 3-mm × 3-mm, thermally-enhanced, 8-pin SON package.

Features

  • Wide Input Voltage Range: 4 V to 40 V
  • Adjustable Output Voltage: 1.5 V to 18 V
  • Output Current: 450 mA
  • Low Quiescent Current (IQ): 15 µA
  • Low Dropout Voltage: 450 mV (max) at 400 mA
  • Power Good with Programmable Delay
  • Thermal Shutdown and Overcurrent Protection
  • Stable with Ceramic Output Capacitors:
    • 10 µF to 500 µF for VOUT ≥ 2.5 V
    • 22 µF to 500 µF for VOUT < 2.5 V
  • Operating Temperature: –40°C to +125°C
  • Package: 3-mm × 3-mm SON-8

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WEBENCH® Designer TPS7A19

  Min   Max Range
Vin  V 4.0 to 40.0V
Vout  V 1.5 to 18V
Iout  A ≤ 0.45A
Ambient Temp  °C -40 to 125°C

Parametrics

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Part number Order Output options Iout (Max) (A) Vin (Max) (V) Vin (Min) (V) Vout (Max) (V) Vout (Min) (V) Fixed output options (V) Package Group Features Regulated outputs (#) Operating temperature range (C) Thermal resistance θJA (°C/W) Noise (uVrms) Approx. price (US$) Rating PSRR @ 100 KHz (dB) Accuracy (%) Dropout voltage (Vdo) (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
TPS7A19 Order now Adjustable Output     0.45     40     4     18     1.5       SON | 8     Enable
Power Good    
1     -40 to 125     48       0.54 | 1ku     Catalog     45     2     240     0.015     See datasheet (SON)    
TPS7A16 Order now Adjustable Output
Fixed Output    
0.1     60     3     18.5     1.2     3.3
5    
MSOP-PowerPAD | 8
SON | 8    
Enable
Power Good    
1     -40 to 125     45     215     1.05 | 1ku     Catalog     26     2     60     0.005     8MSOP-PowerPAD: 15 mm2: 4.9 x 3 (MSOP-PowerPAD | 8)
See datasheet (SON)